Make sure you are confident in calculating with negative numbers, which is a skill often needed to solve equations. To solve the equation, do the inverse operation. The inverse of multiplying by 12 is ...

Solve one-step word problems using a visual model & a problem-solving process. Warm up with a Mystery Math Mistake to hunt for the mistake in adding two 2-digit numbers using a decomposition strategy.

“I’m not going to do my maths homework. Look at these unsolved problems. Here’s a number in mortal combat with another. One of them is going to get subtracted. But why? What will be left of him?” – ...